Dome-shaped lawn sprinkler



Aug. 22, 1950 G. L. BUTLER DOME SHAPED LAWN SPRINKLER Filed Oct. 26, 1946 LL I INVENTOR.

G ray L. B utler Patented Aug. 22, 1950 Gray L. Butler, Waterbury, Conn, assignor to 1 Scovill. Manufacturing Company, Watcrbur Conn., a corporation of Connecticut Application October 26, 1946, Serial No. 705,832

1 Claim. (01. 29956) This invention relates tolawn sprinklers and I particularly to a simple type of -dome shaped lawn sprinkler having no movable parts. v It isthe principal object of this invention to make all the parts that go into the construction perfect a lawn sprinkler of very simple construction, strength, efficiency and also one of attractive appearances.

A further object is to provide a sprinkler unit of the above character having a swivel nut as one of its members so that the sprinkler unit as a whole can be adjustable relative to the end of the hose.

With these objects in view and others not specific'ally referred to, the invention consists in the features, combinations, details of construction and arrangements of parts which will first be described in connection with the accompanying drawing and then more particularly pointed out.

In the drawing:

Fig. 1 shows a side elevational View of a sprinkler unit as attached to the end of a hose.

Fig. 2 is a vertical sectional view through the sprinkler as detached from the hose and taken on a plane through the axis of the intake nozzle.

Fig. 3 is a sectional view taken on line 33 of Fig. 2 looking in the direction of the arrows, and

Fig. 4 is a perspective view of the cup shaped nozzle, per se.

In considering now a description of the parts the numeral ll] refers to a dome shaped housing shell made of relatively thin metal and approaching almost a hemisphere of hollow construction. The open end of this shell is enlarged relative to the diametrical surface of the housing shell as at H with a connecting shoulder I2 therebetween. The enlarged section II initially projects downwardly as shown at lid in dotted outline in Fi 2.

To close the open end of the housing shell III a closure base or disc I3 is provided and the main portion M of this closure base is of a relatively large spherical dished shape to give it strength for the purpose of strengthening the sprinkler construction 2 i in--general and also to withstand the internal water pressures to which it may be subjected when the sprinkler is in use. The closure base at the peripheral edge of the dish shaped portion [4 is provided with a substantially cylindrical wall [-5 that telescopisally fits into the open end of the housing shell The end of this cylindrical wall is formed with an outward flange it that abuts against the shoulder l2 as a stop when the closure disc I3 is assembled in position. When thus assembled the depending portion Ha of the enlarged section ll will be closed over as at H to permanently assemble the closure base l3 into the housing shell l0.

Positioned a short distance above the base of the housing shell is an opening l8 in the side wall thereof, and surrounding this opening is an outwardly drifted annular ring or cylindrical neck [9 constructed to have its axis normal to the vertical axis of the sprinkler and parallel to the base of the same. A cup shaped nozzle shell 2%] is fitted into the cylindrical neck [9 by a relatively tight fit and preferably is permanently secured as by a ring of solder as shown at 2| in Fig. 2 for the purpose of preventing leakage at this point. The open and outer end of the nozzle shell is formed with an integral outward flange 22. Prior to the assembly of the nozzle shell 20 to the cylindrical neck I9 a swivel nut 23 of conventional construction is telescoped over the shell 26 and is swivelly abutted against the flange 22. The usual form of washer, not shown, may be inserted into the swivel nut to rest against the flange 22. The swivel nut is employed to make the usual detachable connection between the male nipple 24 usually provided on one end of a garden hose 25 such as shown in Fig. 1.

In order to set up the right swirling action within the domed housing Ill and break up the water into a relatively fine spray as it is discharged through the opening Illa, the closed or base end 26 of the nozzle shell may be considered a baffle plate. Formed in this base end 26 is a progressively increasing conical section 21 formed inwardly relative to the shell Ill and the enlarged end of this conical section 2'! is slit and forced outwardly relative to the base end 26 to provide a relatively large lateral discharge opening 28. The base end 26 including the conical section 21 provides a substantially abrupt stop to the water being directed in through the nozzle shell 20, and with the pressure resulting in the fluid a considerable head will be formed to force the water through the lateral opening 28 with considerable velocity. The opening 28, as best seen in Fig. 2, is relatively close to the inner spherical wall of the domed shell I0, so that the water directed into the housing will travel around in a circular manner and, it is presumed, will more or less fill up the hollow portion or chamber within the housing IQ and. progressively figll up the chanqn ber from the base upwardly. The fact. that the housing is dome shaped with the discharge opening Illa at the apex, the chamber in the housing I0 becomes progressively decreasing in size as. it leads up to said opening lfia and consequently the angular velocity of the circulatmgi water as. it rises within the chamber will increase inspeed and be discharged from the opening in a rapid swirling manner of a character to break. upthe stream of water into a relatively fine spray most desirable for the sprinkling of lawns.

7 It is, of course, obvious that minor changes in ta l o c n truct n nd ar an m nt of: par s m b mad wi hou epa in fro the scope of e prese t. intendn as set forth n the ppende Glam. 7

shell wall and closed end being located at the inner surface of said body member and the major portion of said shell projecting outwardly from said body member, the end wall of said nozzle shell having a straight vertical slit with a portion of said end wall on one side of said slit being formed inwardly into said body member to provide a horizontally extending conical shaped channel deflector which increases in size toward the slit for directing water laterally at the inner end of said nozzle shell into said body member adjacent, the. lower part of the wall of the semispherical body member whereby the water is caused to flow within said body member with a whirling motiontoward the discharge opening, and means for coupling said nozzle shell to a garden hose.

' GRAY L. BUTLER.

REFERENCES CITED The following references. are. of record in the file of this patent:

UNITED- STATES PATENTS} 

